Product Specification

Marine Supply Dock Anchoring Line Ocean Recycled Danline Double Braided Nylon Rope for Ship Boat Yacht Sailing

1.PHOTOS

2. Main performance

3.Technology Comparison

Coil length: 220m

Spliced strength:± 10% lower

Weight and length tolerance:± 5%

MBL=Minimum Breaking Load conform ISO 2307

Other sizes available upon request

4.Parameter Table

Production Process

• Step 1: Collection and Sorting of Ocean Recycled Nylon Materials
  First, ocean-borne recycled nylon waste (e.g., discarded fishing nets, marine plastic debris, and post-consumer nylon products) is collected from coastal areas, seabeds, or waste management facilities. The collected materials are sorted to remove non-nylon contaminants (such as metal, wood, or other plastics) and classified by nylon type (e.g., nylon 6, nylon 66) to ensure consistency in material properties. This step prioritizes environmental sustainability by diverting plastic waste from oceans and reducing reliance on virgin nylon.
• Step 2: Cleaning, Shredding, and Pelletization
  The sorted recycled nylon is thoroughly cleaned to remove salt, oil, sediment, and organic residues using high-pressure water jets and eco-friendly detergents. After drying, the cleaned nylon is shredded into small flakes. These flakes are then melted in an extruder at controlled temperatures (typically 220–260°C, depending on nylon type) and extruded into uniform nylon pellets. The pellets are cooled and screened to remove any defects, ensuring they meet the tensile and durability standards required for marine ropes.
• Step 3: Fiber Extrusion and Spinning (Danline-Specific Drawing)
  The recycled nylon pellets are fed into a fiber extruder, where they are melted again and pushed through a spinneret (a metal plate with tiny holes) to form continuous filament fibers. These filaments undergo a "drawing" process—critical for Danline ropes—to align the polymer molecules, enhancing fiber strength, abrasion resistance, and elasticity. The drawn filaments are then wound onto bobbins as single-end yarns, with yarn thickness adjusted based on the desired rope diameter and load capacity.
• Step 4: Double Braiding (Inner Core and Outer Braid Formation)
  The process proceeds to double braiding, which involves two simultaneous steps:
  1. Inner Core Braiding: Multiple recycled nylon yarns are braided into a tight, strong inner core using a braiding machine (typically with 8–12 carriers). The core is designed to bear the primary load, so its braid density is optimized for maximum tensile strength.
  2. Outer Braid Braiding: A second set of recycled nylon yarns is braided around the inner core using the same or a larger braiding machine (often with 16–24 carriers). This outer braid acts as a protective layer, enhancing abrasion resistance and shielding the core from saltwater, UV rays, and marine debris. The double braided structure ensures the rope retains flexibility while maintaining structural integrity.
• Step 5: Post-Treatment, Testing, and Cutting
  After braiding, the rope undergoes post-treatment processes:
  • Heat Setting: The rope is heated and cooled to stabilize its shape, preventing shrinkage or deformation when exposed to marine temperatures.
  • Coating (Optional): A thin, eco-friendly polymer coating may be applied to the outer braid to further boost water repellency and UV resistance (without compromising flexibility).
  • Quality Testing: Samples are tested for tensile strength, breaking load, abrasion resistance, saltwater durability, and UV stability to meet marine industry standards.
    Finally, the rope is cut into custom lengths (e.g., 50m, 100m, 200m) and wound onto spools or coils for packaging and distribution.

2. Application Scope

• Ship and Yacht Anchoring Operations
  Designed as a primary anchoring line for ships (small to medium-sized cargo vessels), yachts, and large sailboats. Its double braided structure and recycled Danline nylon composition provide high load-bearing capacity to hold vessels securely against tides, currents, and wind in coastal or offshore waters. The rope’s elasticity absorbs shock from wave impacts, preventing anchor dislodgment and reducing stress on the vessel’s hull and anchor hardware.
• Marine Supply Dock Mooring and Berthing
  Ideal for mooring lines at marine supply docks, ports, and marinas. It secures vessels to docks, pilings, or buoys during loading/unloading of supplies (e.g., fuel, food, equipment), passenger transfers, or long-term berthing. The outer braid’s abrasion resistance withstands friction against concrete docks, metal cleats, and boat hulls, while its saltwater resistance prevents degradation from constant exposure to ocean spray and submersion.
• Sailing Vessel Rigging (Auxiliary Lines)
  Used as auxiliary rigging lines for sailing yachts and sailboats, such as genoa sheets, jib sheets, or spinnaker guys (for lighter to medium-duty applications). Its flexibility allows easy handling and knot-tying, while the recycled Danline nylon’s strength ensures reliable control of sails in variable wind conditions. The rope’s UV stability also maintains performance during prolonged exposure to sunlight while at sea or docked.
• Offshore Recreational and Workboat Use
  Suitable for offshore recreational watercraft (e.g., speedboats, fishing boats) and small workboats (e.g., coastal patrol boats, research vessels). It functions as anchor lines for temporary stops (e.g., fishing, diving, or survey work) or as tow lines for pulling small watercraft (e.g., dinghies, inflatable rafts). The rope’s durability and eco-friendly recycled material make it a sustainable choice for users prioritizing ocean conservation.
• Marine Emergency and Backup Lines
  Serves as a reliable backup or emergency line for marine vessels. In scenarios like engine failure, anchor line breakage, or sudden weather changes, it can be deployed quickly as a temporary anchor line or tow rope to stabilize the vessel until assistance arrives. Its high tensile strength and shock absorption ensure safety during unexpected stress, while its resistance to marine elements guarantees performance in urgent situations.